I get asked this question all the time! It’s no longer the ‘90’s and wearing matching clothes like you’re going to a Sadie Hawkins dance is out. (Unless you have matching Christmas or Halloween pajamas, because that’s just cute.)
What is in style now is picking a color palette and coordinating off of that. For example: navy, cream, denim, forest green, maroon. For more warm tones add beige, brown and orange (if you’re brave and can pull off orange!). Adding textures, like scarves, and some patterns also work nicely.
Try to avoid too many patterns though. It can be a little bit wild when somebody has polka-dots standing next to somebody in plaid standing next to somebody in floral. The photos will also look more professional if you can avoid logos and t-shirts with characters on them.
Ultimately though, these are pictures that will go on your wall and later into your scrapbooks. Wear what makes you feel good.